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scuba@uc*.be*.ed* writes: > : > And another thought..While writing something it ocurred to me that a diver > could forgo the entire table and computer dissolved gas tracking and just use > a portable, wearable, (submergeable) ultrasonic doppler meter to warn a diver > if any bubbles form, and to what extent they form. A sort of decompression > bends alarm for a diver on the fly. It would not err, as a computer can, > because of variations in a divers age, weight, hydration, temperature, work > load, ect. A quick search turned up no such device available or claimed. Doppler can only detect bubbles in front of a detector and unobscured by bone, and even then only moving bubbles. In addition, doppler detection of bubbles is not 100% correlated with detectable symptoms of DCI. In fact, it's not as good as current tables: correlation ratio is less than (1 - observed incidence rate.) Further, if you stopped diving as soon as you detected bubbles, you'd significantly limit diving profiles, far more so than (I believe) most current sport computer divers would be willing to limit their dives. Add to that the more pratical aspect of wearing enough doppler detectors in enough locations, and I personally wouldn't bet on its adoption. Cheers, David Story NAUI AI Z9588, PADI DM 43922, EMT story@be*.wp*.sg*.co* Take only pictures, leave only bubbles.
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